Earth and Planetary Science Letters最新文献

{"title":"Subduction-driven mantle flow beneath and around the Philippine Sea plate from seismic anisotropy","authors":"Jonathan Wolf ,&nbsp;Frederik Link ,&nbsp;Maureen D. Long ,&nbsp;Edward Garnero ,&nbsp;John D. West","doi":"10.1016/j.epsl.2026.119827","DOIUrl":"10.1016/j.epsl.2026.119827","url":null,"abstract":"<div><div>Shear-wave splitting illuminates mantle flow and subduction zone dynamics but is typically inferred near stations or earthquakes, limiting studies in sparsely instrumented regions away from earthquakes. Where stations or earthquakes are present, fast splitting directions are often parallel to the nearest trench, which has yet to be fully understood and reconciled with geodynamic flow predictions. Here we use a novel technique that leverages surface-reflected PS and PPS waves to overcome limitations in coverage beneath the Philippine Sea plate, which is surrounded on all sides by subducting slabs. Upper mantle deformation in this region, best explained by mantle flow below 250 km depth, is generally different from the absolute plate motion direction and instead shaped by the surrounding subduction zones. We interpret our observations as likely evidence for trench-parallel flow in the mantle wedge beneath the Ryukyu, Nankai, and parts of the Izu-Bonin subduction zones, as well as toroidal flow around the Ryukyu and Mariana slab edges. Beneath the Pacific Plate, near the Mariana subduction zone, flow is trench-perpendicular. Our results are generally consistent with flow patterns predicted by previous geodynamic models, and provide a new constraint on subduction-driven deformation in the region.</div></div>","PeriodicalId":11481,"journal":{"name":"Earth and Planetary Science Letters","volume":"678 ","pages":"Article 119827"},"PeriodicalIF":4.8,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145941146","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comment on “The influence of cementation on fault stability”","authors":"Sylvain Barbot","doi":"10.1016/j.epsl.2026.119845","DOIUrl":"10.1016/j.epsl.2026.119845","url":null,"abstract":"","PeriodicalId":11481,"journal":{"name":"Earth and Planetary Science Letters","volume":"678 ","pages":"Article 119845"},"PeriodicalIF":4.8,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146035313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A mid‐Proterozoic coupled Sr and Li isotope excursion and its potential connection to enhanced weathering and ocean oxygenation at 1.57 Ga","authors":"Xi Chen ,&nbsp;Ying Zhou ,&nbsp;Simon W. Poulton ,&nbsp;Fred T. Bowyer ,&nbsp;Colin Mettam ,&nbsp;Shihong Zhang ,&nbsp;Maoyan Zhu ,&nbsp;Da Li ,&nbsp;Philip A.E. Pogge von Strandmann ,&nbsp;Benjamin J.W. Mills ,&nbsp;Graham A. Shields","doi":"10.1016/j.epsl.2026.119848","DOIUrl":"10.1016/j.epsl.2026.119848","url":null,"abstract":"<div><div>Chemical weathering is a critical Earth system process that regulates climate, ocean chemistry and the long-term carbon cycle. However, the intensity and variability of chemical weathering remain insufficiently constrained for the mid-Proterozoic (∼1.8‒0.8 Ga), greatly limiting our understanding of the environmental context to early eukaryotic evolution. Here, we report the first coupled positive seawater ⁸⁷Sr/⁸⁶Sr (∼0.0007) and δ⁷Li (∼5‰) isotope excursions of the Mesoproterozoic Era (1.6‒1.0 Ga), which we argue signifies a substantial weathering event at ∼1.57 Ga, characterised by increased silicate weathering rates and decreased weathering congruency. Drawing on independent geological evidence, we posit that enhanced volcanic CO₂ degassing, possibly alongside accretional orogenesis, increased denudation rates and invigorated the hydrological cycle, amplifying silicate weathering and secondary clay formation. This weathering pulse broadly coincided with coeval ocean oxygenation and carbon cycle disruption, implicating it in the appearance of the earliest known decimetre-scale, multicellular eukaryotic fossils.</div></div>","PeriodicalId":11481,"journal":{"name":"Earth and Planetary Science Letters","volume":"678 ","pages":"Article 119848"},"PeriodicalIF":4.8,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145975720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The influence of crustal recycling on the zirconium isotope composition of ocean island lavas","authors":"Shengyu Tian ,&nbsp;Frédéric Moynier ,&nbsp;Matthew G. Jackson ,&nbsp;Edward C. Inglis ,&nbsp;James M.D. Day","doi":"10.1016/j.epsl.2025.119817","DOIUrl":"10.1016/j.epsl.2025.119817","url":null,"abstract":"<div><div>Crustal recycling into Earth’s mantle influences mantle composition and contributes to chemical heterogeneities in Earth’s interior. Zirconium is a refractory and immobile element in fluids and its stable isotopes are fractionated during magmatic differentiation. Therefore, Zr isotopes have the potential to be used to trace crustal recycling into the mantle. Here, we provide a survey of Zr isotopic systematics in some oceanic island lavas erupted at intraplate volcanic hotspots, collected from geochemically and geologically diverse mantle end members. These samples document either extremely high-³He/⁴He ratios, HIMU (high ‘μ’, or high ²³⁸U/²⁰⁴Pb), EM1 (enriched mantle I) or EM2 (enriched mantle II) mantle sources. Most ocean island lavas display homogeneous δ^94/90Zr (permil deviation of the ⁹⁴Zr/⁹⁰Zr ratio from the IPGP-Zr standard) values, especially for high-³He/⁴He, HIMU and EM1, with δ^94/90Zr indistinguishable within error relative to the bulk silicate Earth estimate (i.e., 0.041 ± 0.041‰). In contrast, Samoan EM2 lavas display higher δ^94/90Zr (up to 0.194 ± 0.019‰). Additionally, the δ^94/90Zr values of the Samoan EM2 lavas show co-variation with radiogenic ⁸⁷Sr/⁸⁶Sr and ¹⁴³Nd/¹⁴⁴Nd ratios. The elevated δ^94/90Zr signatures are not the result of zircon saturation, mantle melting or shallow assimilation. Instead, the Samoan δ^94/90Zr-⁸⁷Sr/⁸⁶Sr and δ^94/90Zr-¹⁴³Nd/¹⁴⁴Nd trends are consistent with binary mixing between a depleted mantle source with lower δ^94/90Zr and a recycled component originating from the upper continental crust (UCC) (∼6%) with higher δ^94/90Zr. The δ^94/90Zr of the recycled UCC material in the Samoan mantle source is calculated to be 0.363‰, falling within the δ^94/90Zr range of intermediate-felsic continental rocks. Based on the δ^94/90Zr-⁸⁷Sr/⁸⁶Sr array formed by EM2 lavas, a felsic continental protolith from UCC is the most likely origin for the incompatible element isotopic composition of the Samoan EM2 mantle.</div></div>","PeriodicalId":11481,"journal":{"name":"Earth and Planetary Science Letters","volume":"678 ","pages":"Article 119817"},"PeriodicalIF":4.8,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145975727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evidence of shallow subsurface ice at Tianwen-1 landing site","authors":"Xindong Meng ,&nbsp;Ling Zhang ,&nbsp;Yi Xu ,&nbsp;Giannakis Iraklis ,&nbsp;Roberto Bugiolacchi ,&nbsp;Jiannan Zhao ,&nbsp;Xiaoping Zhang ,&nbsp;Qiquan Yang ,&nbsp;Rui Chen ,&nbsp;Renrui Liu ,&nbsp;Xiaoting Xu ,&nbsp;Huaqing Cao ,&nbsp;Zhijun Huo ,&nbsp;Long Xiao ,&nbsp;Jialong Lai ,&nbsp;Rui Gao","doi":"10.1016/j.epsl.2026.119832","DOIUrl":"10.1016/j.epsl.2026.119832","url":null,"abstract":"<div><div>Surface and shallow subsurface water ice has been identified in both polar and mid-to-high latitude regions of Mars. However, its distribution at low-to-mid latitudes remains under investigation. China’s first Mars mission, Tianwen-1, landed in southern Utopia Planitia, a region that shows geological evidence of an active hydrological past, making it an ideal site for the search for subsurface water ice. The Mars Rover Penetrating Radar (RoPeR) onboard the Zhurong Rover can reveal subsurface stratigraphy and material properties. It detected a ∼7 m thick layer of low-loss material sandwiched by two high-loss layers. The estimated loss tangent value (0.0030 ± 0.0018) and dielectric constant (∼3.86) are consistent with water ice, suggesting its possible presence at the depth of <span><math><msubsup><mn>15</mn><mrow><mo>−</mo><mn>5</mn></mrow><mrow><mo>+</mo><mn>7</mn></mrow></msubsup></math></span> m. We conducted simulations exploring a range of scenarios that varied in loss materials, stone distribution, and density within the layer. The results indicate that a model incorporating dirty ice mixed with stones aligns most closely with the RoPeR observations. The presence of a shallow subsurface ice-bearing layer at low-to-mid latitudes would represent a valuable and readily accessible resource for future human exploration.</div></div>","PeriodicalId":11481,"journal":{"name":"Earth and Planetary Science Letters","volume":"678 ","pages":"Article 119832"},"PeriodicalIF":4.8,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145975729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Trace element and stable Sr isotope evidence for seamount-driven variations in subducted sediment and carbon recycling in Central America","authors":"Alexander J. Hammerstrom ,&nbsp;Rita Parai ,&nbsp;Richard W. Carlson ,&nbsp;Vlad C. Manea ,&nbsp;Marina Manea ,&nbsp;Stephen J. Turner","doi":"10.1016/j.epsl.2026.119829","DOIUrl":"10.1016/j.epsl.2026.119829","url":null,"abstract":"<div><div>Subduction zone fluxes control the long-term evolution of Earth’s interior, surface reservoirs, and climate. To better constrain these fluxes, we present new δ⁸⁸Sr measurements of lavas and sediments from Nicaragua, a key site of carbonate subduction. δ⁸⁸Sr data are interpreted alongside existing trace element data to assess the value of Sr stable isotopes as a quantitative subduction tracer. Trace element systematics (1) constrain ambient mantle enrichment and extent of melting (Nb vs. Yb), (2) show that the arc’s Sr budget is dominated by melts of subducting altered ocean crust (AOC) (Yb/Sr vs. ⁸⁷Sr/⁸⁶Sr), and (3) verify that incompatible element compositions are controlled by variable recycling of hemipelagic vs. carbonate sediments (Th/Sr vs. ⁸⁷Sr/⁸⁶Sr). Other trace element ratios, such as Nd/Sr, require varying AOC melt compositions. A full forward trace element model confirms the viability of this interpretation. The new δ⁸⁸Sr data build on and corroborate these findings. The range of δ⁸⁸Sr in arc lavas cannot be explained by sediment proportions or ambient mantle compositions, but instead requires δ⁸⁸Sr heterogeneity in the subducting oceanic crust. Notably, AOC δ⁸⁸Sr appears to co-vary with the proportion of hemipelagic vs. carbonate sediment recycled to the arc. We suggest these variations reflect seamount subduction, where seamounts with heterogeneous δ⁸⁸Sr, emplaced during the transition in marine sediment deposition, cap carbonate layers and control their transfer to the arc. Within this framework, we estimate 45% to 60% of subducted carbonate-derived carbon is returned to the arc, consistent with volcanic gas–based estimates.</div></div>","PeriodicalId":11481,"journal":{"name":"Earth and Planetary Science Letters","volume":"678 ","pages":"Article 119829"},"PeriodicalIF":4.8,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145975730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Limited crustal contamination in large igneous province basalts: Sr-Nd-Pb-Os isotope evidence from the Western Ghats, Deccan Traps","authors":"A. Marzoli ,&nbsp;L. Reisberg ,&nbsp;M. Capriolo ,&nbsp;S. Callegaro ,&nbsp;P.R. Renne ,&nbsp;M. Chiaradia ,&nbsp;C.M. Meyzen ,&nbsp;S. Self ,&nbsp;L. Vanderkluysen ,&nbsp;A. Boscaini","doi":"10.1016/j.epsl.2026.119847","DOIUrl":"10.1016/j.epsl.2026.119847","url":null,"abstract":"<div><div>The origin of basalts from the Western Ghats lava sequences of the Deccan large igneous province (LIP) was investigated through combined major and trace element and isotopic analysis. Sr-Nd-Pb isotopic compositions are strongly variable and show a time-related shift from enriched, crustal-like values for the late Cretaceous Kalsubai and Lonavala Subgroup basalts to more depleted mantle-like values for the early Paleogene Wai Subgroup basalts. By contrast, Os isotopic data are relatively uniform from base to top of the Western Ghats (initial ¹⁸⁷Os/¹⁸⁸Os_i at 66 Ma: 0.12-0.21) and generally similar to those of the present-day Réunion mantle plume. The basalts from the Wai Subgroup Ambenali Formation (¹⁸⁷Os/¹⁸⁸Os_i 0.120) may show a moderate contribution from the sub-continental lithospheric mantle. In general, the combined isotopic and trace element compositions, and ¹⁸⁷Os/¹⁸⁸Os_i in particular, show that assimilation of the Proterozoic to Archean Indian crust was generally low (&lt;3 wt.% of starting magma) and did not exceed 8 wt.% in any of the studied lavas. Similar results have been previously reported for other Phanerozoic LIPs. Therefore, we suggest that the emplacement of LIPs as short-lived eruptive pulses interrupted by relatively longer hiatus periods possibly hindered effective and prolonged heating of the basement rocks above their solidus temperature. Most likely, this obstacle to crustal contamination was particularly effective for the Wai basalts, which are interlayered with numerous sedimentary or paleosol layers probably formed during periods of volcanic quiescence when the crustal basement may have returned to low sub-solidus temperatures.</div></div>","PeriodicalId":11481,"journal":{"name":"Earth and Planetary Science Letters","volume":"678 ","pages":"Article 119847"},"PeriodicalIF":4.8,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145975734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Immiscibility between hydrogen and molten iron in planetary cores","authors":"Emma R. Stoutenburg ,&nbsp;Razvan Caracas ,&nbsp;Andrew J. Campbell","doi":"10.1016/j.epsl.2026.119851","DOIUrl":"10.1016/j.epsl.2026.119851","url":null,"abstract":"<div><div>Hydrogen is a likely light element candidate in planetary cores. A hydrogen solubility limit in molten iron could determine the maximum amount of hydrogen possible in the core of a rocky planet. Here, we use ab initio molecular dynamics to investigate the liquid iron-hydrogen system at 10, 50, and 136 GPa and at high temperatures where iron is molten. We calculate Gibbs free energy of mixing at several compositions, from pure iron to hydrogen, using thermodynamic integration. We find that at 10 GPa and 3000 K, there is a liquid-liquid miscibility gap; iron and hydrogen unmix to form Fe_0.34H_0.66 and H₂. At 50 GPa, &gt;2500 K and at 136 GPa, &gt;3500 K, the melts are fully miscible. We extrapolate the Gibbs free energy of mixing to estimate the iron-hydrogen phase diagram down to 1 GPa and in the 1500–6000 K temperature range. As pressure increases, the liquid-liquid miscibility gap shrinks: the solubility limit of hydrogen in liquid iron increases and the closure temperature decreases. At 1 GPa, we estimate the solubility is 18 at% (0.38 wt%) hydrogen at 1500 K. The gap has completely closed by 38 GPa and 3000 K, 69 GPa and 2000 K, and 94 GPa and 1500 K. Thus, small bodies like moons, planetesimals, Mercury, and Mars, which have core-mantle boundary pressures under 30 GPa, are the most limited in the amount of hydrogen their cores can accommodate. On the other hand, iron and hydrogen are fully miscible at the core conditions of larger planets like Earth, Venus, super-Earths, and sub-Neptunes, so their hydrogen concentrations will be limited by sources during formation rather than a thermodynamic limit.</div></div>","PeriodicalId":11481,"journal":{"name":"Earth and Planetary Science Letters","volume":"678 ","pages":"Article 119851"},"PeriodicalIF":4.8,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145975719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unraveling the marine biogeochemical changes during the Neoproterozoic Snowball Earth collapse","authors":"Shengxian Zhu ,&nbsp;Xianguo Lang ,&nbsp;Peter W. Crockford ,&nbsp;Bolin Zhang ,&nbsp;Chengguo Guan ,&nbsp;Chaochao Xing ,&nbsp;Zongyuan Sun ,&nbsp;Mingcai Hou","doi":"10.1016/j.epsl.2026.119854","DOIUrl":"10.1016/j.epsl.2026.119854","url":null,"abstract":"<div><div>Understanding the collapse of the Neoproterozoic Snowball Earth is crucial for unraveling microbial responses to extreme climate change. However, the contrasting lithostratigraphic architecture of the glacial deposits and post-glacial sedimentary facies makes it challenging to identify clear global patterns of marine biogeochemical change across the two ice-house-hot-house transitions. To address this, we conducted a basin-scale mineralogical and geochemical analysis of pyrite in the terminal Sturtian glacial units of South China. Sedimentary-diagenetic pyrite occurs as nodules, laminae, and disseminated forms, with the latter type dominating most strata. Disseminated pyrite comprises euhedral/anhedral crystals and framboids. In the slope facies, laser-ablation δ³⁴S_py of the euhedral/anhedral crystals is uniform at 58.9±3.0‰. Framboids within almost all samples constitute 1-63% of total pyrite, and their proportion negatively correlates with bulk-sample δ³⁴S_py values. This morphology-isotope correlation appears to be a persistent feature across the basin. Specifically, the shelf facies lacks framboids and shows bulk-sample δ³⁴S_py values of 38.3±2.9‰ and the basin facies is enriched in ∼100% framboids and yields bulk-sample δ³⁴S_py values of 12.7±6.9‰. Pyrite content increases seaward from 0.2±0.2 wt.% to 0.8±2.0 wt.% but peaks at 5.6±2.7 wt.% in the slope facies. Across these sulfur isotope trends samples have TOC contents of 0.4±0.5 wt.% and δ¹³C_org values of -30.5±1.7‰ and display a negative correlation within the slope facies. We simulated the geochemical data through one-dimensional diffusion-advection-reaction and two-component organic carbon degradation models. While the former does not reproduce the sulfur abundance and isotope data, the latter suggests that the primary carbon is ∼30 times that of detrital carbon. These results define a seaward-thinning euxinic wedge with a δ³⁴S gradient during the transition out of the Sturtian Snowball Earth, providing a window into this critical event.</div></div>","PeriodicalId":11481,"journal":{"name":"Earth and Planetary Science Letters","volume":"678 ","pages":"Article 119854"},"PeriodicalIF":4.8,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145975721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cascade reservoirs seismicity: a unique dynamical system","authors":"Guangyao Yin ,&nbsp;Huai Zhang ,&nbsp;Lipeng He ,&nbsp;Pei He ,&nbsp;Yaolin Shi","doi":"10.1016/j.epsl.2025.119815","DOIUrl":"10.1016/j.epsl.2025.119815","url":null,"abstract":"<div><div>China's unique cascade reservoir system employs coordinated scheduling to regulate water storage and discharge, significantly influencing regional dynamics. However, studies investigating the potential seismic hazards induced by the cascading effects of multiple reservoirs remain limited. The Xiangjiaba and Xiluodu cascade reservoirs, located downstream along the Jinsha River in southwestern China, a region characterized by significant tectonic activity, are geographically connected in series. In this work, we first examine the spatiotemporal distribution of seismicity in the vicinity of the reservoirs. Subsequently, we develop a three-dimensional poroelastic finite-element model of the cascade-reservoir region that explicitly incorporates fault geometries and typical geological features. This model is adopted to estimate the pore-pressure evolution in association with elastic Coulomb stress changes under a variety of impoundment scenarios. Our results reveal that these two reservoirs exhibit significant concurrent influences on each other, as well as the subsequent regional seismicity. In particular, the changes in Coulomb stress and pore pressure do not accumulate consistently with respect to time. Their interaction induces a redistribution of the crustal stress field through reservoir-reservoir coupling, suggesting that the cascade-reservoir system operates essentially as an independent and exclusive dynamic system. Notably, seismicity appears to be governed not merely by static pore-pressure magnitudes but by the rate of pore-pressure increase, underscoring the importance of dynamic pore-pressure evolution in seismic triggering processes. These findings enhance the understanding of how cascade reservoirs may perturb crust stress fields and seismic activity, providing a theoretical basis for future reservoir design, operation, and seismic risk assessment in complex and seismically active geological settings.</div></div>","PeriodicalId":11481,"journal":{"name":"Earth and Planetary Science Letters","volume":"677 ","pages":"Article 119815"},"PeriodicalIF":4.8,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145847650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}